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INDRIATI MARTHA PATUTI
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INDONESIA
Composite Journal
Published by Universitas Negeri Gorontalo
ISSN : -     EISSN : 28075919     DOI : https://doi.org/10.37905/cj.v1i1.7
Core Subject : Engineering,
Civil Engineering, Building, Construction & Architecture
The journal aims to become an efficient means of publishing and distributing high-quality information from researchers, scientists, and engineers. The main scopes are as follows: Advances in Composite Materials, Computational Mechanics, Foundation and Retaining Walls, Slope Stability, Soil Dynamics, Soil-Structure Interaction, Pavement Technology, Tunnels and Anchors, Site Investigation and Rehabilitation, Ecology and Land Development, Water Resources Planning, Environmental Management, Earthquake and Tsunami Issues, Safety and Reliability, Geo-Hazard Mitigation, Case History and Practical Experience, Others
Arjuna Subject : Teknik (semua kategori) - Bangunan dan Konstruksi
Articles 5 Documents
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Search results for , issue "Vol. 1 No. 1 (2021): Composite Journal" : 5 Documents clear
EVALUASI KINERJA SIMPANG BERSINYAL JALAN J. A. KATILI-JALAN TONDANO-JALAN MADURA DENGAN METODE PKJI Mamu, Idrak; Kadir, Yuliyanti; Patuti, Indriati M.
Composite Journal Vol. 1 No. 1 (2021): Composite Journal
Publisher : Jurusan Teknik Sipil, Fakultas Teknik, Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (787.104 KB) | DOI: 10.37905/cj.v1i1.5

Abstract

Persimpangan atau pertemuan jalan adalah titik temu antara dua jalan atau lebih yang memberikan pengaruh bagi kelancaran arus lalulintas pada kendaraan. Oleh karena itu untuk menunjang kinerja pada suatu simpang maka simpang tersebut digunakan sinyal alat pemberi isyarat lalulintas (APILL). Tujuan penelitian ini yaitu menganalisis kinerja suatu simpang pada kondisi eksisting. Lokasi penelitian ini dilakukan di simpang BRI Andalas Jalan J. A. Katili, Jalan Tondano, dan Jalan Madura. Analisis dilakukan dengan menggunakan metode Pedoman Kapasitas Jalan Indonesia (PKJI 2014). Data primer yang diambil dari hasil survei langsung seperti geometrik simpang, volume arus lalulintas, dan waktu siklus sinyal pada simpang, sedangkan data sekunder diperoleh dari peta lokasi penelitian dan data jumlah penduduk yang diperoleh dari instansi badan pusat statistik. Hasil perhitungan diperoleh kinerja simpang tingkat pelayanan C dengan tundaan rata-rata simpang sebesar 15,29 det/skr pada puncak jam pagi, tingkat pelayanan C dengan tundaan rata-rata simpang sebesar 18,91 det/skr pada puncak jam siang dan tingkat pelayanan C dengan tundaan rata-rata sebesar 20,67 det/skr pada puncak jam sore. Alternatif perbaikan dapat meminimalisir nilai tundaan yaitu dengan perancangan dua fase isyarat dan didapatkan tingkat pelayanan B dengan tundaan rata-rata simpang sebesar 9,82 det/skr pada puncak pagi, dan mengubah perlebar jalur pendekat didapatkan tingkat pelayanan B dengan tundaan rata-rata simpang sebesar 14,97 det/skr pada puncak pagi. dengan kondisi simpang tersebut maka tidak perlu adanya perubahan kriteria desain karena sesuai dengan syarat Tingkat Pelayanan di PKJI.
ANALISIS POLA DISTRIBUSI DAN INTENSITAS CURAH HUJAN DI DAS BOLANGO BONE Karim, Meldiana; Labdul, Barry Yusuf; Husnan, Rawiyah
Composite Journal Vol. 1 No. 1 (2021): Composite Journal
Publisher : Jurusan Teknik Sipil, Fakultas Teknik, Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (640.457 KB) | DOI: 10.37905/cj.v1i1.7

Abstract

Heavy precipitation is among the causes of flooding. Bone Bolango is one of the flooding areas in Gorontalo. Since the parameters determining the discharge of the flood is precipitation, an analysis method for determining the distribution pattern and precipitation that fits the situation in the watershed area of Bolango Bone is required. Thereby, the present study aimed at analyzing the distribution pattern and the precipitation in the area. The analysis methods of rainfall distribution were the normal, log-normal, log Pearson type III, and Gumbel methods. In addition, the precipitation was examined using Talbot method, Sherman method, and Ishiguro method. The data consisted of daily precipitation data (the data from the last 10 years at minimum) from Alale station, Boidu, Longalo, Dulamayo Selatan, and Sogitia Permata. According to the results of parameter statistical analysis, the value of Cs, Cv, and Ck of the precipitation in 5 stations did not meet the requirements for normal distribution, log-normal, and Gumbel. The Cv value of Alale station, Boidu station, Longalo station, Dulamayo Selatan station, and Sogitia station is 0.3, 0.32, 0.19, 0.23, and 0.28, respectively. The Cs value of those stations, in consecutive order, is 3.45, 2.21, 1.33, 0.92, and 1.11, and the Ck value is 18.58, 6.64, 4.55, 2.08, and 3.99. On that ground, the distribution pattern that best fits the watershed area of Bone Bolango us the Log Pearson III. Further, the most appropriate measurement of the precipitation in the area is the Sherman method. This method has the lowest standard deviation value at 67.3 mm and the best correlation value at 1. The heaviest rainfall occurred in the duration of 5 minutes and the return period of 100 years. The precipitation in Alale station, Boidu, Longalo, Dulamayo Selatan, and Sogitia is 378.15 mm/hr, 250.78 mm/hr, 188.98 mm/hr, 300.76 mm/hr, and 358.82 mm/hr, respectively.
TINJAUAN KINERJA STRUKTUR YANG DIRANCANG BERDASARKAN SNI 1726-2002 TERHADAP SNI 1726-2012 (STUDI KASUS STRUKTUR SRPMK KDS D DI KOTA GORONTALO) Kelilaw, Muhammad Farhan Mahendra; Kadarningsih, Rahmani; Gani, Mirzan
Composite Journal Vol. 1 No. 1 (2021): Composite Journal
Publisher : Jurusan Teknik Sipil, Fakultas Teknik, Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (819.102 KB) | DOI: 10.37905/cj.v1i1.10

Abstract

Indonesia mempunyai pedoman dalam perencanaan bangunan gedung tahan gempa yaitu SNI- 1726-2012. Sebelum diterbitkannya SNI-1726-2012, untuk gedung tahan gempa Indonesia pernah mengacu pada SNI-1726-2002, dimana untuk perencanaan gempa dibagi menjadi 6 wilayah gempa dan mengganggap semua daerah di setiap kota memiliki respons spektra yang sama. Dengan adanya perubahan pedoman tersebut gedung yang dibangun bedasarkan SNI-1726-2002 perlu dievaluasi terhadap perubahan-perubahan ketentuan dalam SNI-1726-2012. Prosedur analisis menggunakan bantuan Program ETABS (Extended Three Dimensional Analysis of Bulilding Systems) versi 9.7 untuk gedung dengan SNI 1726 2002 dan versi 17.0.1 untuk gedung dengan SNI 1726 2012 yang meliputi analisis pembebanan hingga pemeriksaan kinerja struktur. Gaya-gaya ultimit penampang akan dikontrol berdasarkan nilai kapasitas yang diperoleh melalui tahap desain awal pada gedung semula baik untuk kapasitas momen dan geser untuk penampang balok dan kolom. Berdasarkan hasil analisis, kinerja struktur Gedung 8 lantai berdasarkan SNI 1726:2002 di Kota Gorontalo, masih memiliki simpangan antar lantai yang aman berdasarkan ketentuan SNI 1726:2002, yakni sebesar 10,006 mm lebih kecil dari yang diijinkan yaitu sebesar 12,35 mm, akan tetapi jika dievaluasi dengan SNI 1726:2012 simpangan antar lantai yang terjadi sebesar 95,31 mm lebih besar dari yang dijinkan SNI 1726:2012 yakni sebesar 70 mm dan penambahan kolom sebagai perkuatan sktruktur Gedung 8 lantai di Kota Gorontalo pada bagian eksterior gedung mampu menambah kekakuan struktur dan meredam simpangan antar lantai yang terjadi dari 95,31 mm ke 69,53 mm sehingga memenuhi simpangan ijin berdasarkan SNI 1726:2012.
TINJAUAN KESTABILAN PERKUATAN LERENG MENGGUNAKAN DINDING KANTILEVER DAN DINDING GRAVITASI Eka Liani, Annisa; Patuti, Indriati Martha; Bahsuan, Rifadli
Composite Journal Vol. 1 No. 1 (2021): Composite Journal
Publisher : Jurusan Teknik Sipil, Fakultas Teknik, Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (468.339 KB) | DOI: 10.37905/cj.v1i1.11

Abstract

Parts of Gorontalo are hills and mountains close to community settlements, which are prone to landslides. To do a research on literature review that analyzes slope reinforcement models, which will be taken into consideration for slope improvement steps in Gorontalo. Slope reinforcement includes retaining walls, gravity walls, cantilever walls and crib walls. This research discusses slope reinforcement models and their stability behavior analysis. Secondary data is in the form of research journals on slope reinforcement models. Calculation data that will be used as experimental data for modeling other retrofitting walls are obtained from the results of research from one of the reviewed journals, namely multilevel gravity walls. The wall that will be analyzed is the retaining wall of a multilevel cantilever type of wall. Analysis of active soil pressure using the Rankine method and slope stability analysis using the slice method which is carried out with the help of 2D Slide software. Based on the results of the stability analysis of slope reinforcement with the selection of stratified cantilever wall reinforcement, the value of the safety factor against sliding (Fgs) is 1.63>1.5, the safety factor against overturning (Fgl) is 2.44>2.0, the safety factor against the collapse of carrying capacity (F) is 8.49>3.0, and the global safety factor value is 1.56>1.5. The value of the safety factor for shifting and rolling has decreased by 1% and 20% respectively compared to the gravitational wall. In the wall bearing capacity, there was an increase of 31%. Changes that occur in the safety factor in cantilevered walls are caused by changing factors in the dimensions of the walls which affect the strength of the structure in the soil holding force and the type of working principle of the walls. As for the global slope stability analyzed, there was a decrease in the safety factor by 5% after changing the type of reinforcement, but it showed that the slope was still stable, because the cantilevered wall type has a slender front wall dimension compared to the gravity wall which is more resistant to the risk of lateral slope movement.
KAJIAN DURABILITAS DAN PENUAAN ASPHALT CONCRETE-WEARING COURSE (AC-WC) ASBUTON PRACAMPUR TERHADAP VARIASI LAMA RENDAMAN Attamimi, Mohamad Faldi; Achmad, Fadly; Desei, Frice L.
Composite Journal Vol. 1 No. 1 (2021): Composite Journal
Publisher : Jurusan Teknik Sipil, Fakultas Teknik, Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (497.488 KB) | DOI: 10.37905/cj.v1i1.17

Abstract

The fundamental problem in roads construction is the road damage that occurs before the road’s designted time is reached. Causes of such a damage consist of weather, water, temperature, or the reduction in the quality of pavement layers due the aging process. The manufacture of test object for Short-Term Oven Aging (STOA) was carried out by heating the test object in loose condition with 135°C of temperature for 4 hours before compaction, while the manufacture of test piece for Long-Term Oven Aging (LTOA) was carried out by heating the test object for 2 days in 85°C temperature after the specimen was compacted. The durability parameters of the AC-WC mixture was observed from Residual Streght Index (RSI), First Durability Index (FDI), and Second Durability Index (SDI). Based on the findings of Pre-Blended Buton Asphalt AC-WC mixture produced 6,0% of Optimum Bitumen Content (OBC). The RSI of the test object in normal, STOA, and LTOA obtained 97,11%, 94,82%, and 95,77% respectively. Furthermore, the FDI of the test object in normal, STOA, and LTOA obtained r value of 0,42%, 0,74%, and 0,60% respectively. Meanwhile, the SDI of the test in normal, STOA, and LTOA obtained a value of 4,87%, 9,75%, and 7,73% respectively. In addition, the Sa of the test object in normal, STOA, and LTOA in 96 hours of soaking were 95,13%, 90,25%, and 92,27% respectively. All in all, the finding showed that the AC-WC mixture with Pre-Blended Buton Asphalt in normal condition attained 72 hours of durability, while for the test specimen which is subjected to aging (STOA and LTOA) attained 48 hours of durability.

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